Who is the black sheep..?(ODD MAN OUT AND SERIES)

1
3, 5, 11, 14, 17, 21
A.21
B.17
C.14
D.3
Answer: Option C
Explanation:
Each of the numbers except 14 is an odd number.
The number '14' is the only EVEN number.
2.

8, 27, 64, 100, 125, 216, 343
A.27
B.100
C.125
D.343
Answer: Option B
Explanation:
The pattern is 23, 33, 43, 53, 63, 73. But, 100 is not a perfect cube.


3.

10, 25, 45, 54, 60, 75, 80
A.10
B.45
C.54
D.75
Answer: Option C
Explanation:
Each of the numbers except 54 is multiple of 5


4.
396, 462, 572, 427, 671, 264
A.396
B.427
C.671
D.264
Answer: Option B
Explanation:
In each number except 427, the middle digit is the sum of other two.

5.
6, 9, 15, 21, 24, 28, 30
A.28
B.21
C.24
D.30
Answer: Option A
Explanation:
Each of the numbers except 28, is a multiple of 3.

6.

1, 4, 9, 16, 23, 25, 36
A.9
B.23
C.25
D.36
Answer: Option B
Explanation:
Each of the numbers except 23, is perfect square.
7
835, 734, 642, 751, 853, 981, 532
A.751
B.853
C.981
D.532
Answer: Option A
Explanation:
In each number except 751, the difference of third and first digit is the middle one.

8.

41, 43, 47, 53, 61, 71, 73, 81
A.61
B.71
C.73
D.81
Answer: Option D
Explanation:
Each of the numbers except 81 is a prime number.

9.

3, 5, 7, 12, 17, 19
A.19
B.17
C.5
D.12
Answer: Option D
Explanation:
Each of the numbers is a prime number except 12.

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